EP2585217A1 - Vorrichtung und verfahren zur analyse einer kontaminierten oberfläche - Google Patents
Vorrichtung und verfahren zur analyse einer kontaminierten oberflächeInfo
- Publication number
- EP2585217A1 EP2585217A1 EP11726069.5A EP11726069A EP2585217A1 EP 2585217 A1 EP2585217 A1 EP 2585217A1 EP 11726069 A EP11726069 A EP 11726069A EP 2585217 A1 EP2585217 A1 EP 2585217A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- medium
- fixing edge
- adhesive
- porous
- contact side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/04—Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/508—Rigid containers without fluid transport within
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/10—Petri dish
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/02—Membranes; Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
- B01L2200/06—Fluid handling related problems
- B01L2200/0689—Sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0809—Geometry, shape and general structure rectangular shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2300/00—Additional constructional details
- B01L2300/08—Geometry, shape and general structure
- B01L2300/0848—Specific forms of parts of containers
- B01L2300/0851—Bottom walls
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N2001/028—Sampling from a surface, swabbing, vaporising
Definitions
- the invention relates to a device for analyzing a contaminated surface with a transfer device with a porous disc-shaped medium and with an analysis device. Furthermore, the invention relates to a method for analyzing a contaminated surface using the aforementioned device.
- US 5,232,838 discloses a carrier of a self-supporting support layer on which a water-soluble adhesive layer is applied.
- a water-soluble adhesive layer On the adhesive layer is itself a water-soluble "instanf” powder scattered, which forms a culture medium for microorganisms in contact with water.
- This layer structure is covered by a peelable protective film.After peeling off the protective film, the adhesive layer with the "instant" powder on a contaminated surface be pressed to bring the microbes from the surface to the carrier. Subsequently, the adhered "instanf” powder is brought into contact with water to initiate the cultivation of the microorganisms by the nutrient medium formed from the "instanf” powder.
- GB 2 019 434 A discloses a pressure-sensitive adhesive film in which a porous support layer of cellulose ester derivatives is coated with an adhesive layer of, for example, polyvinyl pyrrolidone, polyethylene glycol or polyvinyl methyl ether.
- the support layer may be mechanically stabilized on its side facing away from the adhesive layer by a porous peelable foam layer, which facilitates the pressing of the pressure-sensitive adhesive film onto a microbial-contaminated surface. After removing the pressure sensitive adhesive film from the contaminated surface, the film is placed on a nutrient medium with the adhesive layer facing away from the cultivated microorganisms.
- EP 0 816 513 B1 discloses pressure-sensitive adhesive films which consist of a water-permeable but microbe-impermeable membrane to which an adhesive layer of a water-soluble polymer is applied, wherein the adhesive layer can fix microbes.
- the membrane may optionally be applied to a backing layer.
- microorganisms can be removed from contaminated surfaces by means of the adhesive layer.
- the film which may be in the form of a filter blank, may then be introduced into a filtration unit and contacted with an aqueous solution containing a coloring substance (chromogenic) substance for the microorganisms.
- the water-soluble polymer dissolves and passes through the membrane with the aqueous solution, while the microbes are retained on the membrane surface on which the adhesive layer was former, to be subsequently analyzed.
- swabs which are swabs that have a porous thickening at one end, with which the surfaces to be examined are rubbed off intensively and which are then washed out in subsequent analysis steps to study the adhering contaminations.
- cotton swabs are used for all types of surface analysis, be it for (bio) chemical methods, eg. For example, for DNA analysis, or for microbiological investigations to determine the surface contamination.
- Cellulose nitrate membranes can also be used instead of swabs for the quantitative determination of surface contamination, since the electrostatically charged membrane surface removes germs from the surface to be examined and binds to the membrane surface structure. These membranes can then be transferred to an agar medium and quantitatively evaluated analogously to the method using contact agar plates after incubation.
- the by M. Pitzurra et al. has the advantage that the surfaces are not contaminated as with the use of contact agar plates with moist growth or nutrient medium and that the method allows a direct quantitative evaluation compared to "Swabs".
- WO 2008/1 13444 A1 discloses a culture medium unit for taking off a filter from a filter support device of a filtration device.
- the nutrient media unit comprises a base filled with nutrient medium and a lid.
- the cover has a fixing edge projecting into the lower part, which can be connected to the filter by means of an adhesive bond to remove the filter from the filtration device with an edge of the filter.
- DE 20 2009 016 410 U1 discloses a transfer unit for microbiological analysis for receiving a porous, disc-shaped medium which can remove the medium from the first treatment device via the edge of the medium by means of a fixing edge and which has an opening which can be closed with a removable lid a subsequent treatment of the medium in another treatment device is feasible.
- JP 2008/193919 A discloses a culture container comprising two book cover-shaped parts which are connected to one another via a hinge joint for the purpose of analyzing bacterial contaminations on surfaces. The first part, which acts as a lid of the culture container, has a circular elevation with a two-dimensional adhesive coating.
- the second part which acts as a lower part of the culture container, has a bowl-shaped depression, into which a nutrient medium for bacteria can be filled.
- the adhesive-coated elevation of the lid can be pressed onto a bacterially contaminated surface, the bacteria being fixed by the adhesive coating on the elevation.
- the lid is folded by the hinge joint on the lower part and fixed on the survey bacteria contact the nutrient medium in the lower part over a full-surface contact between the survey and the surface of the nutrient medium.
- JP 2007/135542 A discloses a culture container similar to the aforementioned culture container of JP 2008/193919 A, which has a separate lid and a separate lower part with a nutrient medium for bacteria to be analyzed.
- the lid which can be removed from the lower part, has a circular adhesive coating on its inner wall facing the nutrient medium. Bacteria can be removed from a contaminated surface with the aid of this adhesive coating, and after their fixation on the adhesive layer, the lid is slipped onto the base such that the bacterial adhesive layer of the lid adheres over its entire surface to the culture medium surface in the base.
- the two aforementioned devices which have proven in principle, are not suitable for analysis of contaminated surfaces using porous disc-shaped media, such as. As membrane filters to perform, since in an undesirable manner, the analysis of the bacteria to be examined by the bacteria fixing adhesive from the adhesive coating can be disturbed.
- the object of the present invention is to provide an apparatus and a method in which it is possible to use a contaminated surface to analyze quantitatively, mechanically unstable or fragile porous disc-shaped media, without using complicated systems and without further technical aids and without any breakage or alteration of the surface of the disc-shaped media to be analyzed after removal from the contaminated surface and before carrying out the analysis occurs.
- the device according to claim 1 which comprises a transfer device with a carrier and with a porous disc-shaped medium having a contact side which can be arranged on a contaminated surface, wherein the carrier has a first fixing edge with the medium on its contact side the opposite side is connectable, and which comprises an analysis device which is connectable for the removal of the medium from the carrier via a second fixing edge with the medium on the contact side, wherein the first fixing edge via a first adhesive bond and the second fixing edge via a second adhesive bond with the Medium are connectable and wherein the first adhesive bond is releasable by a lower force than the second adhesive bond.
- a support layer is arranged between the carrier and the medium, wherein the analysis device for the removal of the medium from the support layer via the second fixing edge is connectable to the medium on its contact side.
- the transfer device with the medium can be stamp-like with its contact side applied to the surface to be analyzed.
- the porous medium is fixed on the carrier or on the optionally provided support layer of the transfer device via the first fixing edge.
- the transfer device of the device according to the invention is lifted off the surface and turned over, so that the contact side of the medium, which contains the contaminants from the surface, can be connected to the analysis device of the device according to the invention.
- a second fixing edge of the analysis device now allows the detachment of the medium from the carrier or from the optionally provided support layer of the transfer device and the fixation of the medium at this second fixing edge, without the need for further technical aids.
- the separation of the medium from the transfer device by means of the analysis device is made possible by the fact that to release the second adhesive bond, which is mediated by the second fixing edge, a higher force must be used than for the release of the first adhesive bond, which is mediated by the first fixing edge ,
- equivalent fixing devices are also to be understood as the first fixing edge, via which the medium can be connected on its side remote from the contact side to the carrier or to the optionally provided support layer.
- the first fixing edge via which the medium can be connected on its side remote from the contact side to the carrier or to the optionally provided support layer.
- the different strengths of the two above-mentioned adhesive bonds which are due to the different forces required to release the adhesive bonds, can preferably be adjusted by the fact that both adhesive bonds are formed with respect to their physical and / or chemical properties different adhesives on the porous disc-shaped Apply different adhesion forces.
- the same adhesive for both adhesive bonds mediated by the first and second fixing edges, but to vary the degree of covering of these fixing edges with adhesive for the two adhesive joints, wherein e.g. B. the second fixing edge has a larger effective adhesive surface than the first fixing edge.
- the contact side and the side remote from the contact side of the porous medium physically or chemically have different surface properties, so that the side facing away from the contact side of the medium by an adhesive connection to the first fixing edge is fixable, which is releasable by a lower force than the second adhesive bond between the second fixing edge and the contact side of the porous medium.
- the first and the second adhesive connection are formed temporarily or reversibly.
- the first and the second fixing edge preferably each have an adhesive layer of an adhesive, which is a pressure-sensitive dispersion adhesive or is formed from acrylate copolymer microspheres.
- wet or moist porous media can also be easily fixed to the first fixing edge of the carrier or the support layer of the transfer device or to the second fixing edge of the analysis device or can be removed from the second fixing edge for subsequent treatments.
- the adhesive layers may be applied either to the first and second fixing edges of the transfer device and the analysis device or to the respective edges of the porous medium corresponding to these fixing edges.
- the adhesives are sterilizable.
- the adhesives are preferably DNA- and protein-free and show no nonspecific reactions with reagents used for the rapid analysis of microbial contaminants (eg, antibody-based reagents or reagents used for polymerase chain reaction (PCR reaction)).
- reagents used for the rapid analysis of microbial contaminants eg, antibody-based reagents or reagents used for polymerase chain reaction (PCR reaction)
- adhesives can be used which have only low autofluorescences and do not react nonspecifically with corresponding dyeing and labeling reagents for the analysis of the contaminated surface. This applies in particular to common wavelength ranges of 400 to 800 nm in the evaluation. It is also possible to use adhesives which have no antibiotic, antiviral or fungicidal properties.
- the adhesive is preferably applied to the first and / or second fixing edge via a water-soluble intermediate layer.
- the water-soluble intermediate layer is particularly preferably attached to the first fixing edge of the transfer device between this fixing edge and the adhesive the second fixing edge of the analysis device has no such intermediate layer.
- the second fixing edge but not the first fixing edge, has a water-soluble intermediate layer.
- This embodiment has the advantage that the porous medium can be wetted after its removal from the transfer device and after its fixation at the second fixing edge of the analysis device with a liquid which dissolves time-displaced, the water-soluble intermediate layer, so that the porous medium for subsequent treatments easily from the second fixing edge of the analysis device can be deducted.
- the support layer of the transfer device is porous and consists of an elastic plastic foam. This ensures a uniform pressurization of the surface to be analyzed by means of the porous medium.
- the support layer consists of a material which, when the porous disc-shaped medium is removed from the transfer device by the analysis device, leaves no residue on the side remote from the contact side of the medium.
- an elastic plastic foam as backing layer has the further advantage that, according to the open, porous structure, only small contact surfaces to the medium are present and thus automatically lower adhesive forces are present in comparison to smooth, non-porous support layers. In this way it can be automatically ensured that the first adhesive bond is releasable by a lower force than the second adhesive bond between the second fixing edge and the contact side of the medium.
- the support layer not only bonds the carrier to the porous media, but also optimizes contact by its flexibility and depth, and allows uniform contact pressure on the contaminated surface via the contact side of the porous media.
- the support layer is preferably fixedly connected to the carrier and has the same surface geometry as the porous medium.
- the support layer may be in the height of its thickness of the z. B. wart-shaped support to be enclosed, so that there is a trough, which is filled by the support layer.
- the transfer device is formed as part of a culture medium container.
- the support layer of the transfer device is attached to the underside of the culture medium container via an irreversible or reversible adhesive bond.
- the nutrient medium eg. B. a nutrient medium.
- the transfer of the porous medium from the support layer at the bottom of Nährmedien portions on the analysis device is carried out in this embodiment by the transfer device, wherein the first adhesive bond, as described above, is releasable by a lower force than the second adhesive bond.
- the analysis device which can be used for the transfer can be designed such that it simultaneously serves as a cover for the nutrient medium container.
- the support layer is impregnated with an analysis liquid or with a treatment liquid for a subsequent treatment of the porous medium.
- an analysis liquid or with a treatment liquid for a subsequent treatment of the porous medium is impregnated with an analysis liquid or with a treatment liquid for a subsequent treatment of the porous medium.
- This embodiment has proven particularly useful when the carrier is formed as a trough for the porous support layer, so that it can be filled with the aforementioned liquids and thus z.
- Suitable analytical and treatment fluids are known in microbiology.
- the disk-shaped porous medium is a membrane filter.
- the support layer and its connection to the membrane filter via the first fixation margin for the direct evaluation of the germs should ensure optimized diffusion and supply with the nutrient media.
- the surface of the membrane filter is dimensioned somewhat smaller in diameter than the surface of the support layer, so that when impregnating the support layer with the nutrient medium, the displaced air can escape laterally.
- the transfer unit of the device according to the invention preferably has a cylindrical geometry, but is not limited to this geometry since further corresponding units for subsequent treatment may require different geometries.
- the second fixing edge of the analysis device is formed by a free end face of an annular wall, which is arranged on a cover inner surface of the analysis device.
- the porous medium can be lifted from the carrier or from the support layer of the transfer device optionally provided between the carrier and the medium, because the adhesive force imparted by the second fixing edge extends from the first fixing edge of the transfer device the medium exceeds the applied adhesive force.
- the analysis device is functionally matched in its circumferential contour to the contour or structure of the transfer device such that the second fixing edge can only be connected to the medium in its peripheral, annular region by an adhesive bond.
- This peripheral area is not usable for further analysis.
- the inner diameter of the second Fixierrands the analyzer before the effective, an analysis accessible surface area of the porous medium before. Contaminations in this marginal area are not taken into account in the analysis.
- the analysis device has a closable with a removable lid opening, via which a subsequent treatment of the porous medium is feasible. By means of this closable opening, it is possible to further analyze the contact side of the porous medium containing the contaminations, or to bring further treatment devices, which can be inserted into this opening, into contact with the contact side.
- step E) is triggered by an adhesive bond mediated by the second fixing edge, which exerts a greater adhesive force on the medium than an adhesive bond mediated by the first fixing edge.
- the detachment in step E) is triggered by a mediated by the second fixing edge adhesive bond, which exerts a greater adhesive force on the medium than a mediated by the first fixing edge adhesive bond, it is possible, the porous medium after analysis of the contaminated surface to withdraw from the first fixing edge of the transfer device and at the same time to fix it to the second fixing edge of the analysis device, without additional technical aids (such as tweezers, fingers) being required for this transfer of the porous medium from the contaminated surface into the analysis device.
- a porous support layer is arranged between the support and the medium, which is impregnated before step A) or after step B) with an analysis liquid or with a treatment liquid for a subsequent treatment of the medium.
- a membrane filter as the porous medium for the process according to the invention.
- the contaminants are preferably microbes, such as bacteria or fungi.
- the membrane filter is particularly preferably a microporous membrane that retains the aforementioned microbes.
- step F) the placement of the porous medium connected to the analysis device via the second fixing edge additionally takes place on the surface of a nutrient medium in the lower part of a culture medium container.
- the analysis device with the medium fixed on the second fixing edge can thus be deposited on the surface of a nutrient medium (eg agar) arranged in the lower part of the nutrient medium unit (eg Petri dish) for incubation, whereby the lower part of the nutrient medium unit is replaced by the medium Cover functioning analysis device is covered.
- a nutrient medium eg agar
- the nutrient medium unit eg Petri dish
- Another preferred embodiment combines the function of the transfer device with that of a lower part of a culture medium container and the function of the analysis device as a lid of the culture medium container in such a way that the transfer device is formed on the opposite side of the porous medium as part of the lower part of the culture medium container.
- the sub support layer of the transfer device is attached to the underside of the culture medium container via an optional irreversible or reversible adhesive bond.
- the nutrient medium eg. B. a nutrient medium.
- the transfer of the porous medium from the support layer at the bottom of Nährmedien portions on the analyzer in this embodiment is characterized in that by means of the second fixing edge of the analyzer, the porous medium is detached from the support layer and fixed to the second fixing edge, wherein subsequently the porous medium comes to rest on the top of the nutrient medium and the analysis device covers the nutrient medium as a lid of the culture medium container.
- Figure 1 a side view of a transfer device of the invention
- Figure 2 a side view of the device according to the Invention with the
- Transfer device of fiction, contemporary device in section and Figure 4 is a side view of another embodiment of the
- the device 1 comprises a transfer device 2 with a carrier 3, which is particularly preferably designed as a trough, in which the support layer 4 is arranged.
- the transfer device 2 furthermore has a porous, disc-shaped medium 5 with a contact side 6.
- the support layer 4 can be connected via a first fixing edge 7a to the side 8 of the medium 5 facing away from the contact side 6.
- the first fixing edge 7a is an adhesive connection which ensures that the medium 5 remains adhered to the support layer 4 in its edge region.
- the support layer 4 supports the porous medium 5 over its entire surface on its side 8 facing away from the contact side 6 and protects it from mechanical damage.
- the support layer 4 may be porous and contain an analysis or treatment liquid with which the porous medium 5 is wettable before or during the analysis.
- the transfer device 2 may comprise a sterile cover 9 in the form of a peel-off film having a tab which protects the contact side 6 of the porous medium 5 from damage and unwanted contamination before analysis of a contaminated surface is performed.
- the transfer device can optionally have a handle 10 on the carrier 3.
- the handle 10 facilitates the stamp analog handling of the transfer device.
- the fixing edge 7a should also be understood to mean equivalent fixing devices which deviate from a rim-shaped embodiment and which allow a full-area or punctiform fixation of the medium 5 on the underside of the support layer 4.
- the full-surface configuration of the fixing edge 7a over the entire underside of the support layer 4 is particularly suitable when a porous polymer foam is used as support layer 4. Due to the low contact points of the webs of the polymer foam to the medium 5 even over the entire underside of the support layer 4 executed adhesive bond in the sense of Fixierrands 7a impart a lower adhesive force than the adhesive force of the second, preferably ring-shaped fixing edge 7b is taught.
- the sterile cover 9 may first be removed from the contact side 6.
- the transfer device 2 can now be placed with the exposed contact side 6 as a stamp on the contaminated surface to be analyzed, the contact side 6 of the porous medium 5 comes to rest over the entire surface of the contaminated surface and contaminations (z. B. microbes) are received on the contact side 6 of the porous medium 5.
- the transfer device 2 After the effect of the transfer device 2 on the surface to be analyzed, the transfer device 2 is lifted off the surface and turned over.
- the transfer device is connected according to Figure 2 after lifting and turning around so with the analysis device 11 that the edge of the contact side 6 of the medium 5 comes to rest on the second fixing edge 7b of the analysis device 11.
- This second fixing edge 7b is like the first fixing edge 7a formed as an adhesive bond.
- this adhesive bond through the second fixing edge 7b is designed in such a way that the second fixing edge 7b exerts a greater adhesive force on the contact side 6 of the medium 5 than the first fixing edge 7a on the contact side 6 opposite side 8 of the medium 5.
- This variance in the two adhesive forces can, for. B. - as indicated by way of example in Figure 2 - are set by the width of the adhesive layer having Fixierr suitable, wherein the same adhesive is used for both adhesive layers.
- the fixing edge 7b is made wider than the fixing edge 7a.
- this variance of the adhesive forces exerted by the first and second fixing edges is also possible by using the same adhesive in the same width of the adhesive layer for both fixing edges, but changing the surface properties of the contact side 6 and the side 8 of the porous medium facing away from it 5 physically or chemically different from each other so that both sides 6 and 8 adhere to different degrees to the fixing edges 7b and 7a.
- different adhesives are used chemically or physically as an adhesive layer for the first and second fixing edges 7a and 7b, which exert different levels of adhesive force on the contact side 8 and the side 6 facing away from it.
- the second fixing edge 7b exerts a stronger adhesive force on the porous medium 5 than the first fixing edge 7a, the medium 5 can be detached from the support layer 4 of the transfer device 2 without the aid of further aids with the aid of the fixing edge 7b of the analysis device 11.
- the second fixing edge 7b is formed by a free end face of an annular wall 12.
- the transfer device 2 can be reversibly connected to the analysis device 11 by a snap, clamping, latching or bayonet connection, which is not shown around the carrier 3.
- the analysis device 11 can be separated from the transfer device 2.
- the analysis device 11 may have an opening 13 which can be closed by a cover 14. This makes it possible to carry out subsequent treatments on the contact side 6 of the medium 5 facing the opening 13.
- the transfer unit 2 is conceivable that the support layer 4 shown in Figure 2 is omitted and that in this embodiment, the medium 5 directly and directly over the fixing edge 7a over the entire surface with the handle 10 remote from the underside of the carrier 3 is connectable, wherein the medium 5 is mechanically supported by the underside of the carrier 3.
- the carrier 3 simultaneously acts as a support layer for the medium 5.
- the transfer device 3 has a porous, disc-shaped medium 5 with a contact side 6.
- the carrier 3 can be connected directly and directly to the side 8 of the medium 5 facing away from the contact side 6 via a first fixing edge 7a.
- the first fixing edge 7a is an adhesive connection, which ensures that the medium 5 remains in its edge region on the underside of the carrier 3 at least for the duration of contact of the medium 5 with the contaminated surface.
- the carrier 3 supports the porous medium 5 over its entire surface on its side 8 facing away from the contact side 6 and protects it from mechanical damage. Handling aids, such as an optional handle 10, facilitate stamp-analog handling of the transfer device 2.
- fixing means 7a are to be understood to mean equivalent fixing devices which deviate from an edge-shaped embodiment and which allow a full-surface or punctiform fixation of the medium 5 on the underside of the carrier 3.
- the full-surface design of the fixing edge 7a over the entire, the handle 10 facing away underside of the carrier 3 is particularly appropriate when a porous, mechanically stable, preferably non-compressible polymer foam is used as the carrier 3. Due to the low contact points of the webs of the polymer foam to the medium 5 even over the entire underside of the carrier 3 executed adhesive bond in the sense of Fixierrands 7a impart a lower adhesive force than the adhesive force, which is mediated by the second, preferably annularly shaped fixing edge 7b.
- the analysis device 11 as a cover for a lower part of a culture medium container with a nutrient medium 15.
- the lower part preferably has an inner wall, not shown, which corresponds to the second fixing edge 7b of the analysis device 11.
- FIG. 4 shows a nutrient medium container ready for surface analysis, in which the porous medium 5 is fixed on the support layer 4, which is part of the lower part of the culture medium container, on the side facing away from the culture medium 15 and is protected by a sterile cover 9.
- the transfer device 2 is formed as part of the lower part of a culture medium container.
- the upper side of the lower part of the culture medium container in this case has a receiving device for the culture medium 15.
- the analysis device 11 acts in this embodiment simultaneously as a lid of the culture medium container.
- the carrier 3 of the transfer device 2 is in this case at the same time the container for the culture medium 15, which is covered by the analysis device 11 as the upper part of the culture medium container and corresponds to the analysis device 11 in the dimensions.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010024933A DE102010024933A1 (de) | 2010-06-24 | 2010-06-24 | Vorrichtung und Verfahren zur Analyse einer kontaminierten Oberfläche |
| PCT/EP2011/002794 WO2011160773A1 (de) | 2010-06-24 | 2011-06-08 | Vorrichtung und verfahren zur analyse einer kontaminierten oberfläche |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2585217A1 true EP2585217A1 (de) | 2013-05-01 |
| EP2585217B1 EP2585217B1 (de) | 2015-01-14 |
Family
ID=44512302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11726069.5A Active EP2585217B1 (de) | 2010-06-24 | 2011-06-08 | Vorrichtung und verfahren zur analyse einer kontaminierten oberfläche |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10233476B2 (de) |
| EP (1) | EP2585217B1 (de) |
| CN (1) | CN102958611B (de) |
| DE (1) | DE102010024933A1 (de) |
| WO (1) | WO2011160773A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3030420B1 (de) * | 2013-08-08 | 2022-03-16 | Tiax Llc | Systeme und verfahren zur sammlung und entnahme von chemischen spezies |
| EP3854867A1 (de) * | 2020-01-23 | 2021-07-28 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Vorkehrung zur kultivierung von prokryotischen und eukaryotischen zellen in einer strukturierten matrix unter physikalischer kräfteeinwirkung |
| DE102020002588A1 (de) * | 2020-04-29 | 2021-11-04 | Sartorius Stedim Biotech Gmbh | Filtrationseinheit, Verfahren zu ihrer Herstellung, Verfahren zum Nachweis von Mikroorganismen und Verwendung der Filtrationseinheit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2817503A1 (de) | 1978-04-21 | 1979-10-31 | Merck Patent Gmbh | Folie zum abklatschen von mikroorganismen |
| US4299921A (en) * | 1979-03-30 | 1981-11-10 | Youssef Kamal A | Prolonged incubation microbiological apparatus and filter gaskets thereof |
| US5232838A (en) | 1991-12-09 | 1993-08-03 | Minnesota Mining And Manufacturing Company | Culture media device and method of use |
| EP0816513B1 (de) | 1996-06-28 | 2003-01-08 | Nitto Denko Corporation | Druckempfindliches klebendes Blatt zum Nachweis von Mikroorganismen und Methode zum Nachweis von Mikroorganismen |
| JP2007135542A (ja) | 2005-11-22 | 2007-06-07 | Nitto Denko Corp | 環境付着菌検出用デバイス及び環境付着菌の検出方法 |
| FR2901806B1 (fr) * | 2006-06-01 | 2008-08-01 | Millipore Corp | Dispositif et ensemble de controle microbiologique |
| JP5103925B2 (ja) | 2007-02-09 | 2012-12-19 | 大日本印刷株式会社 | 培養容器 |
| DE102008005968B4 (de) | 2007-03-21 | 2015-07-30 | Sartorius Stedim Biotech Gmbh | Nährmedieneinheit und Verfahren zur Aufnahme eines Filters aus einer Filtrationsvorrichtung |
| FR2915487B1 (fr) * | 2007-04-26 | 2009-06-05 | Millipore Corp | Ensemble et procede pour analyse microbiologique |
| DE102009004667A1 (de) | 2009-01-12 | 2010-07-29 | Sartorius Stedim Biotech Gmbh | Transfereinheit und Verfahren zur Aufnahme eines Mediums aus einer Behandlungsvorrichtung |
-
2010
- 2010-06-24 DE DE102010024933A patent/DE102010024933A1/de not_active Withdrawn
-
2011
- 2011-06-08 US US13/702,428 patent/US10233476B2/en active Active
- 2011-06-08 WO PCT/EP2011/002794 patent/WO2011160773A1/de not_active Ceased
- 2011-06-08 CN CN201180031290.0A patent/CN102958611B/zh active Active
- 2011-06-08 EP EP11726069.5A patent/EP2585217B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011160773A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102958611B (zh) | 2014-10-15 |
| US20130089890A1 (en) | 2013-04-11 |
| EP2585217B1 (de) | 2015-01-14 |
| CN102958611A (zh) | 2013-03-06 |
| WO2011160773A1 (de) | 2011-12-29 |
| US10233476B2 (en) | 2019-03-19 |
| DE102010024933A1 (de) | 2011-12-29 |
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